Patents by Inventor Masahiro Tsujikawa

Masahiro Tsujikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for removing nitrogen oxides from a contaminated gas containing the same
    Patent number: 3960507
    Abstract: Apparatus in which a gas such as air, containing nitrogen oxides, is mixed with high temperature steam of 130.degree. to 150.degree.C in a reactor vessel to convert the nitrogen oxides to soluble substances and then dissolve said soluble substances in a liquid absorbent such as warm water or a weak alkaline warm aqueous solution, said liquid absorbent being collected thereafter, so that the nitrogen oxides are separately removed from the gas. The apparatus of the invention has an attainable efficiency of separately removing nitrogen oxides exceeding 95 percent, for gas having the nitrogen oxides content of 100 ppm to 10,000 ppm.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: June 1, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Tsujikawa, Minoru Ozasa, Fumio Takagi, Katsumi Hirai, Akio Iwasaki, Hiroshi Imamura, Testuhiro Ueda